Find the next number in the sequence

5 12 24 36 ?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

There is a family that live in a round house. The two parents go out for a movie and leave a babysitter to watch their son. They come back and the kid was not there. Some one kidnapped him. The maid said she was cleaning in a corner. The cook said he was making pizza. The babysitter said she was getting a board game. Who kidnapped him.

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

What's the only room from which no one can enter or leave

I’m orange, I wear a green hat and I sound like a parrot. What am I?

If you say my name, I will no longer exist. What am I?